血液与人体其他构造之间的气体互换是另有一种呼吸，叫做内呼吸，或构造呼吸。
The exchange of gasses between the blood and other tissue in the body is another form of respiration, called internal respiration, or tissue respiration.
标准节、拉杆、上下转台等主要部件(位)全部采用CO2气体保护焊，熔深大，变形小标准节可互换组合。
All the main piece such as standard knot, tie, up and down turntable adopt CO2 gas coverage weld whose depth is big and the deformation is small. The assembling of standard knot can interchange.
该系列快速接头结构简单，操作简便，可快速装卸，具有良好的密封性和互换性，适用于气体、液体、粉质等 介质的输入、输出。
It is simple in structure, easy in operation, and can be changed in a short time. It is especially suitable for transmission of gas, liquid and powder.
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